An online database of animal natural history, distribution, classification, and conservation with student use in mind. It includes thousands of species accounts and descriptions of levels of organization above the species level, especially phyla, classes, and in some cases, orders and families.
The Tree of Life is a collection of information about biodiversity compiled by expert and amateur contributors. Pictures, text, and other information is available for every species and each group of organisms, living or extinct. Features include: phylogenetic branching patterns between groups of organisms; hierarchies of life; phylogeny and evolution information.